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This patch reverts the commit835e4241e7("usb: host: xhci-plat: enable clk in resume timing") because this driver also has runtime PM and the commit560869100b("clk: renesas: cpg-mssr: Restore module clocks during resume") will restore the clock on R-Car H3 environment. If the xhci_plat_suspend() disables the clk, the system cannot enable the clk in resume like the following behavior: < In resume > - genpd_resume_noirq() runs and enable the clk (enable_count = 1) - cpg_mssr_resume_noirq() restores the clk register. -- Since the clk was disabled in suspend, cpg_mssr_resume_noirq() will disable the clk and keep the enable_count. - Even if xhci_plat_resume() calls clk_prepare_enable(), since the enable_count is 1, the clk will be not enabled. After this patch is applied, the cpg-mssr driver will save the clk as enable, so the clk will be enabled in resume. Fixes:835e4241e7("usb: host: xhci-plat: enable clk in resume timing") Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.